Systematic Low-Energy Effective Field Theory for Electron-Doped Antiferromagnets

Details Systematic Low-Energy Effective Field Theory for Electron-Doped Antiferromagnets Systematic Low-Energy Effective Field Theory for Electron-Doped Antiferromagnets

2006-12-14

arxiv.org/abs/cond-mat/0612363v1

Phys.Rev.B75:214405,2007

Physics

Condensed Matter

Strongly Correlated Electrons

25 pages, 7 figures

Scientific paper

10.1103/PhysRevB.75.214405

In contrast to hole-doped systems which have hole pockets centered at $(\pm \frac{\pi}{2a},\pm \frac{\pi}{2a})$, in lightly electron-doped antiferromagnets the charged quasiparticles reside in momentum space pockets centered at $(\frac{\pi}{a},0)$ or $(0,\frac{\pi}{a})$. This has important consequences for the corresponding low-energy effective field theory of magnons and electrons which is constructed in this paper. In particular, in contrast to the hole-doped case, the magnon-mediated forces between two electrons depend on the total momentum $\vec P$ of the pair. For $\vec P = 0$ the one-magnon exchange potential between two electrons at distance $r$ is proportional to $1/r^4$, while in the hole case it has a $1/r^2$ dependence. The effective theory predicts that spiral phases are absent in electron-doped antiferromagnets.

Affiliated with

Also associated with

No associations

Rating

Systematic Low-Energy Effective Field Theory for Electron-Doped Antiferromagnets does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Systematic Low-Energy Effective Field Theory for Electron-Doped Antiferromagnets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Systematic Low-Energy Effective Field Theory for Electron-Doped Antiferromagnets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-476243